LPG click detects dangerous liquefied petroleum gas leakage.
LPG click carries an MQ-5 sensor. Just like our other sniffing sensors on Alcohol click, and CO click, this one also has a sensor unit made of Tin dioxide (Sn02) which has lower conductivity in clean air than when LPG starts filling the air.
Derived from fossil fuels, LPG is used for heating, motor fuel, or cooking. It's highly inflammable so we use sensors for leakage detection.
By the way, did you know that the word "inflammable" is never used on warning signs because most people mistakenly think it means "not flammable"? Warning labels always say "flammable", a word that practically didn't even exist until the early 20th century.
Luckily, programming languages don't have that sort of life-threatening ambiguity built in them. So go ahead and make use of the Libstock examples in mikroC, mikroPascal and mikroBasic and see how LPG click works. Specs and details on the product page.